Improvement in machines forpolishing enameled paper



UNITED STATES PATENT OFFICE.

WILBUR F. WRIGHT, OF NASHUA, NEW HAMPSHIRE, ASSIGNOR TO HIM- SELF ANDEDWIN BLOOD, OF NEWBURYPORF MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR POLISHING ENAMELED PAPER.

Specification forming part of Letters Patent No. 56,682, dated July 24,1866.

To all whom it may concern:

Be it known that I, WILBUR F. WRIGHT, of Nashua, in the county ofHillsborough and State of New Hampshire, have invented certain new anduseful Improvements in Machines for Polishing Enameled Paper 5 and l dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, makinga part of this specification, in which- Figure l is aside elevation. Fig. 2 is a central vertical section. Fig. 3 is a planor top view.

Similar letters of reference indicate corresponding parts in all theiigures.

This invention consists in the employment of two sets of rollers, theburnishing-roller in cach set revolving at a higher velocity than itssupporting-roller, and with the burnishingroller of one set revolving ata greater speed than that of the other set, whereby the polishingoperation is more effectually performed than if only a single set wereused.

The invention further consists in the arrangement with regard to twosuch rollers, one of which is a burnishing-roller and rotates at ahigher velocity than the other, of two pressure-rollers, whereby thepaper is prevented from becoming wrinkled as it passes into the machine,and is at the same time partially smoothed by pressure preparatory tobein g polished or burnished.

To enable others to understand the construction and operation of myinvention, I will proceed to describe it with reference to the drawings.

A is a suitable supporting-frame of iron or other suitable material, andwhich sustains the working parts of the machine. Projecting l, downwardfrom each side of the central part of this frame A is a hanger, a, andwith its shaft working in suitable bearings formed in the lower end ofthese hangers is a transverse roller, B, on which the enameled paper iswound previous to being fed into the machine.

Situated transversely at the front or forward end of the frame A, andone above the other, are two feed and pressure rollers, C and D, whichmay be of iron. The shaft of the upper roller, D, works at each end invertically-adinstable bearings c, as shown more clearly in Fig. l, inorder that it may be adjusted to press with any desired degree ofpressure upon the paper as it passes between the said rollers. Upon oneend of the said shaft of the rollerD is fixed a large spur-wheel, d,while upon the opposite end of the shaft of the lower, roller, C, isfixed a small gear-wheel, e.

E is a revolving cylindrical brush, which is placed in front of theroller C and parallel therewith, and has upon one end of its shaft apulley, f, by means of which it is revolved by a suitable belt actingupon the said pulley. This brush E is so placed as to brush the outersurface of the paper as it passes to the rollers C D and remove anyparticles of dirt or dust that may have adhered thereto.

Situated transversely in the upper and central part of the frame A isthe paper roller F and the steelburnishing-roller G. The roller F ismade of compressed paper, whereby its surface is enabled to exert agreater frictional or adhesive action upon the under surface of thesheet of paper to carry it under the burnishing-roller than it would ifmade of wood or metal, and has its shaft supported by and working infixed bearings in the sides of the frame A, one end of the said shaft ofthe roller F being furnished with a small gear-wheel, g, which isconnected by means of an intermediate gear-wheel, h, with the gear-wheelc ofthe pressure-roller C. The burnishing-roller G is made of steel,very smooth and polished, and placed over the paper roller F andparallel therewith, and has the ends of its shaft working in adjustablebearings similar to the bearings c of the roller D. Upon one end of theshaft of this burnishing-roller Gris a bandwheel, j, and upon theopposite end of the said shaft is a spur-wheel, k, which meshes into thespur-wheel d, attached to the shaft of the roller D, as hereinbefore setforth, the spurwheel 7c being considerably less in diameter than thespur-wheel d, in order to give an increased velocity to the wheel k, andconsequently to the biunishing-roller G, as will be presently furtherexplained.

Situated near the rear end of the frame A, behind the rollers F G andparallel with the saine, is another set or pair of rollers, consistingof a lower roller, H, and an upper burvrushing-roller, I, of steel. Thelower-roller,

H, is made of compressed paper, in the same manner and for the samepurpose as the roller F, and has the ends of its shaft working in fixedbearings in the sides of the frame A. Secured upon one end of the shaftof this paper roller H is a small gear-wheel, m, which is connected byan intermediate gear-wheel, n, with the gear-wheel g on the shaft of theroller F. The gear-wheels 6 g 7L m n are all oi' the same dian'leter, sothat the rotation of the lower iron roller, C, communicates an equal anduniform motion 'to the paper rollers F and H.

rlhe burnishing-roller I is made of polished steel, in the same manneras the bnrnishingroller G, and is placed over and parallel with theroller H, in the saine way that the roller G is placed over the paperroller F, and has the ends of its shaft working in adjustable bearingsr, similar to the bearings c and i of the rollers D and G.

s is a gear-wheel fixed upon one end of the shaft of theburnishing-roller I, and meshing into another gear-wheel, u, which turnson a pin or pivot projecting out from one side of the frame A, andmeshes into the gear-wheel 7c on the shaft of the burnishing-roller G.The gear-wheels s and u are smaller than the gearwheel 7c, in order thatthe burnishing-roller I may have a higher velocity than the otherburnishing-roller, G.

J isa transverse roller situated in the rearmost end of the frame A, andupon which the paper is rolled as it passes from the machine. Upon oneend ofthe shaft of this roller J is a band-wheel, o, which is connectedwith a pulley, w, on the shaft of the burnishing-roller I by means ot abelt, a', so that the rotations of the said burnishing-roller revolvethe roller J.

rIhe surface of the paper having been previously covered or coated withthe enameling substance or material, and being in a dry condition and inthe form of long sheets or pieces, is wound upon the roller B. The outerend of the paper is then passed around the lower iron roller, C, betweenthe said roller C and the other iron roller, D, then back between therollers F G, and then between the rollers H I, after which it isattached to the roller J the enameled surface of the paper beinguppermost as it passes between the said rollers. Motion is thencommunicated to the several rollers in the directions shown by thearrows in Fig. 2 by means of a suitable belt acting` upon the band wheelor pulley j of the polishingroller G, while another belt, acting uponthe pulley y, rotates the brush E. The paper is unwound from the rollerB, and, passing around thefront side of the roller G, comes in contactwith the revolving brush E, which brushes off any dirt or dust that mayhave adhered thereto. The paper then passes between the iron rollers GD, which not only spread it out evenly, and thus prevent it fromgathering into wrinkles, but also, by subjecting it to considerablepressure, partially smooth the surface ofthe same. Passing thencebetween the paper roller F and the burnishing-roller G, the saidbiu'nishing-roller, moving` at about five times the velocity (more orless) of the roller F, polishes or burnishes the enameled surface of thepaper by the friction thereon of its revolving surface; or, in otherwords, the enameled surface of the paper is polished by the continuousrubbing` action upon it of the burnishing-roller G. Passing from thisset or pair of rollers F G, the paper passes between the rearinost setor pair, H I, where the polishing process is completed by theburnishitlg-roller I, which acts upon the'surface ofthe paper in thesame manner as the burnishing-roller G. The velocity of thebnrnishing-roller I being ten times (more or less) that of the paperroller H, or twice that of the other bnrnishingroller, G, gives a morefinished gloss or polish to the partially-burnished surface of the paperthan would be obtained by the use of a single burnishing-roller. rlhepaper, passing from the rollers H I, is wound upon the roller J, whichmay be removed when the entire sheet or piece of paper is polished andwound thereon.

What I claim as new, and desire to secure by Letters Patent, is-

El, substantially as herein set forth, for the purpose specilied.

WIL'BUR F. WRIGHT. Witnesses:

J. P. S. OTTERsEN,

B. F. GEORGE.

I A .l i.

